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Digiron [165]
2 years ago
11

A stone is thrown vertically upward with the velocity of 25 m/s. How long will it take to reach the maximum height?Also calculat

e the height.​
Physics
1 answer:
Ne4ueva [31]2 years ago
6 0

Answer:

Answer in the attachment above ☝☝☝

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Based on your knowledge of the electromagnetic spectrum, why are radio waves considered harmless while ultraviolet waves and x-r
Goryan [66]

The correct answer of this question is : A) Radio waves have longer wavelengths, lower frequency, and lower energy than ultraviolet waves and x-rays.

EXPLANATION :

Before going to answer this question, first we have to know the electromagnetic spectrum.

Electromagnetic spectrum is the arrangement of electromagnetic waves in the ascending order of frequency or descending order of wavelength.

When the waves are arranged in the ascending order of their frequency, then perfect order is given below as such -

Radio wave < Micro wave <  Infrared wave <   Visible light < U.V ray<  X-ray < Gamma ray .

Hence, we see that radio wave has the least frequency, and gamma ray has the most frequency.

We know that wavelength and frequency are inversely are inversely proportional to each other. Hence, radio wave has more wavelength and less frequency.

The wave having more frequency is more energetic. Hence, gamma is more energetic and radio wave is less energetic .



4 0
4 years ago
Read 2 more answers
1. Which object has the greatest inertia?
Digiron [165]

Answer:

1.c,2.c,3.a,4.d

Explanation:

the following answer are listed with there number

7 0
4 years ago
3. What are the two parts of a shadow?
Zielflug [23.3K]

Answer:

the umbra and penumbra

Explanation:

The two parts of a shadow are the umbra and penumbra.

A shadow is an expression formed when light from a source is cut blocked by an opaque body.

Most shadows are made up of two parts, umbra and penumbra.

  • The umbra is the darkest, and the innermost part of a shadow.
  • In the penumbra, only a portion of the light source is blocked. It is more of like a partial shadow.

The umbra is directly formed by light which impinges on an opaque body and it completely cut off.

5 0
4 years ago
Which of the following is not an example I work?? Some please help
n200080 [17]
B. picking up a box off the floor
8 0
4 years ago
Read 2 more answers
Sally and ner pet puagie go everywnere
FrozenT [24]

a)The total distance she walks will be 1100 m.

b)The magnitude and direction of the budgie's path will be 854.4 m at 69.44°.

c)Sally's average speed for the journey will be 2.82 m/sec

d)The average velocity of Sally's budgie willl be 2.19 m/sec North of East.

<h3>What is displacement?</h3>

Displacement is defined as the shortest distance between the two points.

Distance travelled in north direction,d₁ = 8.0 x 10² m

Time elapsed  travelled in north direction,t₁ = 5.0 minutes

Distance travelled in east direction,d₂ = 0.30 km = 3.0 × 10² m

Time elapsed  travelled in east direction,t₂= 1.5 minutes

The total distance she walks,d =? m

The magnitude and direction of the budgies path will be, D

Sally's average speed for the journey, \rm S_{avg}

The average velocity of Sally's budgie,\rm V_{avg}

a)

The total distance she walks is found as;

d=d₁+d₂

d=800 m +300 m

d = 1100 m

b)

The magnitude and direction of the budgies path will be;

\rm D = \sqrt{d_1 ^2 + d_2^2 } \\\\ D = \sqrt{800^2 +300^2 } \\\\ D = 854.4 \ m

The direction of the displacement is;

\rm   \theta  = tan^{-1} \frac{800}{300} \\\\ \theta = tan^{-1}(2.6) \\\\ \theta = 69.44 ^ 0

c)journey is found as;

Sally's average speed for the

\rm S_{avg}  = \frac{d}{t} \\\\  S_{avg}  =\frac{100}{300+900} \\\\  S_{avg}  =2.82 \ m/sec<em>
</em>

d)

The average velocity of Sally's budgie is found as;

\rm V_{avg}  = \frac{854.4}{300+ 900 } \\\\ V_{avg}  = 2.19 \ m/sec North of east

Hence, the total distance she walks, the magnitude and direction of the budgie's path, Sally's average speed, and the average velocity of Sally's budgie will be 1100 m,854.4 m at 69.44°,2.82 m/sec, and 2.19 m/sec North of East.

To learn more about displacement refer to the link;

brainly.com/question/10919017

#SPJ1

6 0
2 years ago
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